Finding the Fourth Proportional to 1,339.62, 2,005.81 and 876.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.62 : 2,005.81 = 876.24 : x
2. Step 2: Convert to fraction form
   1,339.62/2,005.81 = 876.24/x
3. Step 3: Cross multiply
   1,339.62x = 2,005.81 × 876.24
4. Step 4: Simplify right side
   1,339.62x = 1,757,570.95
5. Step 5: Solve for x
   x = 1,757,570.95/1,339.62
6. Step 6: Final answer
   x = 1,311.99